She handles this difficult subject with a light touch.
她处理起这种难题来方法很巧妙。
Mathematical physics is an almost impossibly difficult subject.
数学物理学是一门难得难以想像的学科。
It's the most difficult subject.
它是最难的学科。
Physics is a difficult subject for me.
对我来说物理是一门难学的科目。
I feel that geometry is a difficult subject.
我认为几何是一门难学的课程。
It can be a difficult subject to talk about.
这可能是个难以启齿的话题。
Physicss is a difficult subject for me.
对我来说物理是一门难学的科目。
Mathematics is regarded as a difficult subject.
数学被人认为是难科目。
Mathematics is the most difficult subject for me.
数学是我最感困难的科目。
Though physics is a difficult subject, we like it.
尽管物理是一个难学的科目，但我们都喜欢它。
It is a difficult subject for you, very difficult.
对你们来说，这是个很难的问题，非常难。
English is the most difficult subject that you will learn.
英语是你将学到的最难的课程。
This is the most difficult subject that I have ever done.
这是迄今为止我做过的最难的课题。
I don't know why I choose such a difficult subject before.
不知怎么地，居然选了个比较累人的题目。
I don't think it wise for him to choose such a difficult subject.
我认为他选择这样困难的题目是不明智的。
Are you certain you need to discuss the difficult subject, at all?
你确信自己有必要去讨论这一困难话题吗？
His theory contributes to our understanding of this difficult subject.
他的理论有助于我们对这个困难问题的理解。
I don't think it wise for [of] him to choose such a difficult subject.
我认为他选择这样难的学科是不明智的。
Peasant status is an important and a difficult subject in Middle Ages.
农民身份是中世纪农民问题研究中的一个重点，同时也是一个难点。
Maths is the most difficult subject and English is the easiest, I think.
我认为数学是最难的科目，而英语是最容易的。
Discontinuity is an important and difficult subject in traffic model research.
间断问题是交通流动力学模型研究中一个重要而且困难的课题。
The research of automatic cartographic generalization is a very difficult subject.
数字地图自动综合的研究是一个非常艰难的课题。
Her work has contributed enormously to our understanding of this difficult subject.
她的着作极有助于我们对这个困难问题的了解。
Human facial expression recognition is a very important but also difficult subject.
人脸表情识别是模式识别中一个非常重要却十分复杂的课题。
The diagnosis in the nonlinear systems is the hot and difficult subject in this field.
非线性系统的故障诊断是该领域的热点与难点问题。
The management of active video object by software is a difficult subject in multimedia technology.
用纯软件实现动态视频对象的管理是多媒体技术中的一个难点。
Maybe the most difficult subject is to learn not to pay too much attention to the result of your hard work.
或许最难学的课程，就是不要过分看重你努力的结果。
Maybe the most difficult subject is to learn not to pay too much attention to the result of your hard work.
或许最难学的课程，就是不要过分看重你努力的结果。
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